diff --git a/interface-checklist.md b/interface-checklist.md
index 3fa8be0..f394f37 100644
--- a/interface-checklist.md
+++ b/interface-checklist.md
@@ -18,4 +18,4 @@
 | 12 | POST | `/api/reports/{id}/audit` | 审核提交 | `src/api/report.js` | ✅ 已修正 | 支持 `status/opinion/files`，保存附件并记录历史 |
 | 13 | DELETE | `/api/reports/{id}` | 删除报告 | `src/api/report.js` | ✅ 已修正 | 删除任务并清理 pdf/预览/附件目录 |
 | 14 | POST | `/api/validate-cma` | CMA 校验 | `src/api/report.js` | ✅ 已修正 | 返回 `{valid, cma_number, institution}` |
-| 15 | GET | `/api/reports/{id}/pdf` | PDF 预览 | `src/views/shibieneirong/shenhe/index.vue` |  |  |
+| 15 | GET | `/api/reports/{id}/pdf` | PDF 预览 | `src/views/shibieneirong/shenhe/index.vue` | ✅ 已修正 | 返回 PDF 文件（`Content-Type: application/pdf`） |
diff --git a/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/controller/TaskController.java b/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/controller/TaskController.java
index 9f6e319..9796efc 100644
--- a/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/controller/TaskController.java
+++ b/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/controller/TaskController.java
@@ -9,11 +9,16 @@ import com.chinaweal.youfool.reportdetect.modules.task.entity.Task;
 import com.chinaweal.youfool.reportdetect.modules.task.service.TaskService;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.core.io.Resource;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
 
+import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 import java.time.LocalDate;
@@ -290,6 +295,24 @@ public class TaskController {
         return ResponseEntity.ok(resp);
     }
 
+    @GetMapping("/reports/{id}/pdf")
+    @SaCheckRole(value = { "ADMIN", "AUDITOR", "USER" }, mode = SaMode.OR)
+    public ResponseEntity<Resource> getReportPdf(@PathVariable("id") String id) {
+        String pdfPath = taskService.getPdfPath(id);
+        if (pdfPath == null) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+        }
+        File file = new File(pdfPath);
+        if (!file.exists()) {
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).build();
+        }
+        Resource resource = new FileSystemResource(file);
+        return ResponseEntity.ok()
+                .header(HttpHeaders.CONTENT_DISPOSITION, "inline; filename=\"" + file.getName() + "\"")
+                .contentType(MediaType.APPLICATION_PDF)
+                .body(resource);
+    }
+
     @GetMapping("/statistics")
     @SaCheckRole(value = { "ADMIN", "AUDITOR", "USER" }, mode = SaMode.OR)
     public ResponseEntity<?> getStatistics() {
diff --git a/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/service/TaskService.java b/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/service/TaskService.java
index d35475b..d5a2852 100644
--- a/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/service/TaskService.java
+++ b/src/main/java/com/chinaweal/youfool/reportdetect/modules/task/service/TaskService.java
@@ -663,6 +663,14 @@ public class TaskService {
                 });
     }
 
+    public String getPdfPath(String approvalId) {
+        if (approvalId == null || approvalId.isBlank()) {
+            return null;
+        }
+        Task task = taskRepository.findByApprovalId(approvalId);
+        return task != null ? task.getPdfPath() : null;
+    }
+
     public Map<String, Object> getStatistics() {
         List<String> pendingStatuses = List.of("pending", "ocr_completed");
         List<String> auditedStatuses = List.of("compliant", "non-compliant");